A MAC Scheme with QoS Guarantee for MANETs

Yanbin YANG, Yulin WEI

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DOI: 10.4236/ijcns.2009.28088                

Abstract

IEEE 802.11 distributed coordination function (DCF) can alleviate the collision and hidden station problem, but it doesn’t differentiate traffic categories (TC). Therefore, it can’t provide sufficient QoS support for different traffic categories. Recently, a new contention-based enhanced distributed channel access (EDCA) scheme was proposed which provides a probabilistic QoS support. In this paper, an adaptive EDCA scheme with QoS guarantee for mobile ad hoc networks (MANETs) is proposed. In this scheme, the EDCA scheme and the token bucket algorithm (TBA) are combined to adjust the contention window (CW). Our scheme provides the traffic differentiation.

Keywords

Mobile Ad Hoc Network, Medium Access Control, Distributed Coordination Function, En-hanced Distributed Channel Access, Contention Window

Conflicts of Interest

The authors declare no conflicts of interest.

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